Improvement in drilling-machines



v UNITED STATES PATENT OFFICE.

WARREN LYON, OF N EW YORK, N. Y.

IMPROVEMENT IN DRlLLlNG-MACHINES.

Specification forming part of Letters Patent No. 46,123, dated January31, 1865.

To all whom, t muy concern:

Be it known that I, WARREN LYON, of the city. county, and State of NewYork,have invented a new a-nd Improved Drilling-Machine; and I do herebydeclare that the followin gis a full,clear, and exact descriptionthereof, which will enable others skilled in the art to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specitication, in which- Figure l, Sheet N o. 1, is a sideelevation of my invention; Fig. 2, Sheet No. l, a detached plan or topview of the bed-plate of the same; Fig. 3, Sheet N o. 2, a frontelevation of the invention Fig. 4, Sheet No. 2, a detached plan or top view ofthe bed-plate of the same; Fig. 5, Sheet No. 2, an end view ofFig. 4.

Similar letters of reference indicate like pirts.

This invention relates to an improvement on a drillingmachine for whichLetters Patent were granted to me bearing date September 20, 1863.

The invention consists in an improved arrangement of the levers by whichthe necessary feed-pressure is transmitted to the drill from the weight,whereby the device is rendered more compact and simple than hitherto.

The invention also consists in a novel construction of the clamp bywhich the work to be drilled is held, whereby articles of dit'erentforms may be firmly held and expeditiously adjusted in and taken fromthe clamp.

The invention further consists in a novel construction of certain otherparts of the machine, whereby advantages are obtained over the originalinvention, as hereinafter set forth.

A represents a standard attached to a suitable base, B. These parts maybe of wood, and to the standard A a castiron bracket, C, is firmlybolted, said bracket being cast with bearings a af, in which a verticalarbor, D, is fitted and allowed to rotate freely, and also slide up anddown. The arbor D is formed with a crank, E, for the purpose of turningit, and on the upper end of said arbor there is a weight, F, which actsupon the arbor as such, and also as a flywheel.

G is a swivel, tted to the upper end of the arbor D, and connected by alink,H, to a lever, I, the fulcrum-pin b of which is in a bracket, J,firmly bolted to the standard A. The inner end of the lever I isconnected by a link, K,

to another lever, L, the fulcrum-pin of which passes through the upperend of a bar, M', the lower end ot' the latter being secured b vapivot-bolt, c, to a lug, d, attached to A. On the lever L there isplaced a sliding weight, M, which may be secured at any desired point bya set-screw, e. By this arrangement it will be seen that the downwardpressure of the weight F on the arbor D may be graduated as desired byadjusting the weight M on the lever Lnearer to or farther from thelatter. All the advantages of the original machine are retained bya muchsimpler arrangement. The lever L has a rod, N, attached to it by apivot, f, and the lower end of this rod is bent in the form of a hook,g, to catch under a bar, h, attached to the standard so as to hold upthe arbor D when it is desired to elevate the drill free from thebed-plate. The drill (designated vby O) is iitted in the lower end ofthe arbor D. The rod N has a curved arm, i, for the operator to grasp inactuating the levers to elevate the drill.

By having the bearings a a of the arbor D on a cast-iron bracket, O, asshown, the drill may be readily adjusted or put up in proper positionfor work. v

In the original device the bearings were on separate arms, andconsiderable care and attention were necessary in order to get thebearings properly in line, and in case a careless workman superiutendedor performed the work the device would operate impeifectly.

P is a bed-plate attached to or fitted on an arm, Q, which is providedat its inner end with an eye or tube, j, the latter being fitted on avertical fixed shaft, It, the ends of which have lugs 7c attached tothem, said lugs being bolted to the standard A. The arm Q may be securedhigher or lower on the shaft R, as required, by a set-screw, l. Thebedplate has two parallel cleats, m m, at its under side, the inner.surfaces of which are beveled or inclined to form a dovetail to slideupon the outer part of the arm Q, which is forked, and has inclinedsides to conform to the beveled surfaces of the cleats m m. By thismeans the bed-plate P may be readily adjusted upon and removed from thearm Q. On the upper surface of the bed-plate P there is a verticalprojection, u, having a V-shaped' notch, o, at its face side and thereare also two parallel cleats, p p, on the upper surface ofthe bed-plate,be-

tween which aslide, R', is fittted and works, said slide also having avshaped notch, q, in its face side. (See Fig. 2.) This slide 1t' isoperated by a screw, S, and made to clamp square bars dx, to he drilled,a hole being made in P for said bar to pass through. The V-shapednotches o q insure the proper entering oi' the bars cx. Flat bars mayalso be secured between the slide R' and the projection u, and thebed-plate P may be properly ad- `iusted in relation with the drill byturning the arm Q, either to the right or to the left on its shaft It,or raising or lowering it, as may be required. In drilling plates anordinary tlat bed-plate, A', Figs. 4 and 5, may be used.

By means of this improved construct-ion and arrangement I am enabled sofar to contract thc dimensions ot a machine of the requisite power thatit may be placed in a room of moderate height, and also to red nce thelength of the projecting part so as to render them less liable to injuryin transportation. Greater steadiness of motion and general compactnessis likewise secured, which recommends them on the ground of economy' ofroom and con venience of manipulation.

Having thus described my invention, Iclaim as new and desire to secureby Letters Patentl. The arrangement, as herein shown and described, ofthe levers I L, drill-arbor D, with Weight F attached, the counterpoiseM on lever L, and the rod N, for the purpose specified.

2. The projection c and cleats p p on the face or upper side of thebed-plate P, in combination with the slide R', screw S, and theadjustable arm Q, to which the bed-plate is attached, all arrangedsubstantially as and for the purpose set forth.

3. The bracket C, With bearings t a attached when used in combinationwith the drillarbor D and its concomitant parts, as herein shown anddescribed.

WARREN LYON.

Witnesses:

J. P. HALL, WM. F. MCNAMARA.

